ICP DAS USA tGW-700 Series User manual

tGW-700 Series
GW-2200 Series
User Manual
Tiny Modbus/TCP to RTU/ASCII Gateway Ver. 2.6, Oct. 2020
WARRANTY
All products manufactured by ICP DAS are warranted
against defective materials for a period of one year
from the date of delivery to the original purchaser.
WARNING
ICP DAS assumes no liability for damages consequent
to the use of this product. ICP DAS reserves the right to
change this manual at any time without notice. The
information furnished by ICP DAS is believed to be
accurate and reliable. However, no responsibility is
assumed by ICP DAS for its use, nor for any
infringements of patents or other rights of third parties
resulting from its use.
COPYRIGHT
Copyright © 2020 by ICP DAS. All rights are reserved.
TRADEMARKS
Names are used for identification purposes only and
may be registered trademarks of their respective
companies.
CONTACT US
If you have any questions, please feel free to contact
us via email at:
[e-mail]
SUPPORT
This manual relates to the following modules:
tGW-712, tGW-722, tGW-732
tGW-715, tGW-725, tGW735
tGW-718, tGW-724, tGW-734
tGW-712i, tGW-722i, tGW-732i
tGW-715i, tGW-725i, tGW735i
tGW-718i, tGW-724i, tGW-734i
tGW-718i-D
tGW-715-T, tGW-715i-T,
tGW-718-T, tGW-718i-T,
GW-2212i, GW-2222i, GW-2232i
GW-2215i, GW-2225i, GW-2235i

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Copyright © 2020 ICP DAS CO., Ltd. All Rights Reserved. - 2 -
TABLE OF CONTENTS
PACKING LIST ....................................................................................................................................................................................- 5 -
MORE INFORMATION......................................................................................................................................................................- 6 -
1. INTRODUCTION .....................................................................................................................................................................- 7 -
1.1 FEATURES .......................................................................................................................................................................... - 9-
1.2 APPLICATIONS.................................................................................................................................................................... - 9-
1.3 ETHERNET SOLUTIONS.................................................................................................................................................... - 10 -
1.4 WEB SERVER TECHNOLOGY............................................................................................................................................. - 11 -
2. HARDWARE INFORMATION .............................................................................................................................................- 12 -
2.1 SPECIFICATIONS............................................................................................................................................................... - 12 -
2.2 APPEARANCE ................................................................................................................................................................... - 13 -
PoE and Ethernet RJ-45 Jack................................................................................................................................................- 14 -
+12 to +48 VDC Jack...............................................................................................................................................................- 14 -
Operating Mode Switch .........................................................................................................................................................- 15 -
LED Indicator ..........................................................................................................................................................................- 15 -
Serial COM Ports .....................................................................................................................................................................- 16 -
DIN-Rail Mounting .................................................................................................................................................................- 16 -
2.3 DIMENSIONS .................................................................................................................................................................... - 17 -
tGW-700 Series Module (Unit: mm) ...................................................................................................................................- 17 -
CA-002 Cable (Unit: mm) ......................................................................................................................................................- 18 -
tGW-700-T Series Module (Unit: mm)................................................................................................................................- 19 -
GW-2200 Series Module (Unit: mm) ...................................................................................................................................- 20 -
2.4 PIN ASSIGNMENTS ........................................................................................................................................................... - 21 -
tGW-712/tGW-712i................................................................................................................................................................- 21 -
tGW-722/tGW-722i................................................................................................................................................................- 21 -
tGW-732/tGW-732i................................................................................................................................................................- 22 -
tGW-715/tGW-715i/tGW-715-T/tGW-715i-T .................................................................................................................- 22 -
tGW-725/tGW-725i................................................................................................................................................................- 23 -
tGW-735/tGW-735i................................................................................................................................................................- 23 -
tGW-718/tGW-718i/tGW-718-T/tGW-718i-T .................................................................................................................- 24 -
tGW-718i-D..............................................................................................................................................................................- 24 -
tGW-724/tGW-724i................................................................................................................................................................- 25 -
tGW-734/tGW-734i................................................................................................................................................................- 25 -

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GW-2212i/2222i/2232i..........................................................................................................................................................- 26 -
GW-2215i/2225i/2235i ..........................................................................................................................................................- 27 -
2.5 WIRING NOTES FOR RS-232/485/422 INTERFACES................................................................................................... - 28 -
RS-232 Wiring.........................................................................................................................................................................- 28 -
RS-422 Wiring.........................................................................................................................................................................- 29 -
RS-485 Wiring.........................................................................................................................................................................- 29 -
3. GETTING STARTED FOR TGW-700 / GW-2200 SERIES USING IPV4 .................................................................- 30 -
3.1 CONNECTING THE POWER AND HOST PC........................................................................................................................ - 30 -
3.2 CONFIGURING NETWORK SETTINGS................................................................................................................................ - 34 -
3.3 CONNECTING THE MODBUS DEVICES.............................................................................................................................. - 36 -
3.4 CONFIGURING THE SERIAL PORT..................................................................................................................................... - 37 -
3.5 SELF-TEST ....................................................................................................................................................................... - 39 -
4. GETTING STARTED FOR TGW-700 / GW-2200 SERIES USING IPV6 .................................................................- 40 -
4.1 CONNECTING THE POWER AND HOST PC........................................................................................................................ - 40 -
4.2 CONFIGURING NETWORK SETTINGS................................................................................................................................ - 44 -
4.3 CONNECTING THE MODBUS DEVICES.............................................................................................................................. - 46 -
4.4 CONFIGURING THE SERIAL PORT..................................................................................................................................... - 47 -
4.5 SELF-TEST ....................................................................................................................................................................... - 49 -
5. WEB CONFIGURATION.......................................................................................................................................................- 51 -
5.1 LOGGING IN TO THE TGW-700/GW-2200 WEB SERVER............................................................................................ - 51 -
5.2 HOME PAGE...................................................................................................................................................................... - 53 -
5.3 NETWORK PAGE............................................................................................................................................................... - 54 -
5.3.1 IP Address Selection ...............................................................................................................................................- 54 -
5.3.2 General Settings......................................................................................................................................................- 58 -
5.3.3 Modbus Settings......................................................................................................................................................- 59 -
5.3.4 Restore Factory Defaults.......................................................................................................................................- 61 -
5.3.5 Update by Ethernet ................................................................................................................................................- 63 -
5.4 SERIAL PORT PAGE.......................................................................................................................................................... - 64 -
5.4.1 Settings (Port1 Settings).......................................................................................................................................- 64 -
5.4.2 Settings (Pair-Connection Settings) ...................................................................................................................- 68 -
5.5 FILTER PAGE..................................................................................................................................................................... - 69 -
5.6 MONITOR PAGE................................................................................................................................................................ - 70 -
5.7 PASSWORD PAGE.............................................................................................................................................................. - 71 -
5.8 LOGOUT PAGE.................................................................................................................................................................. - 72 -
6. TYPICAL APPLICATIONS ...................................................................................................................................................- 73 -
6.1 MODBUS GATEWAY.......................................................................................................................................................... - 74 -

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6.2 MODBUS NET ID.............................................................................................................................................................. - 75 -
6.3 PAIR-CONNECTION APPLICATIONS .................................................................................................................................. - 76 -
6.4 TCP CLIENT MODE APPLICATIONS................................................................................................................................. - 84 -
7. MODBUS INFORMATION ...................................................................................................................................................- 89 -
7.1 MODBUS MESSAGE STRUCTURE...................................................................................................................................... - 89 -
01(0x01) Read the Status of the Coils (Readback DOs) ............................................................................................................- 92 -
02(0x02) Read the Status of the Input (Read DIs) ...................................................................................................................- 93 -
03(0x03) Read the Holding Registers (Readback AOs) ............................................................................................................- 94 -
04(0x04) Read the Input Registers (Read AIs) .........................................................................................................................- 95 -
05(0x05) Force a Single Coil (Write DO) ..................................................................................................................................- 96 -
06(0x06) Preset a Single Register (Wr ite AO) ..........................................................................................................................- 97 -
15(0x0F) Force Multiple Coils (Wr ite DOs) ...............................................................................................................................- 98 -
16(0x10) Preset Multiple Registers (Write AOs) ..............................................................................................................- 99 -
7.2 EXCEPTION CODES............................................................................................................................................................- 100 -
APPENDIX A: TROUBLESHOOTING........................................................................................................................................- 102 -
A1. HOW DO IRESTORE THE WEB PASSWORD FOR THE MODULE TO THE FACTORY DEFAULT PASSWORD?...............................................- 102 -
APPENDIX B: GLOSSARY ............................................................................................................................................................- 104 -
1. ARP (ADDRESS RESOLUTION PROTOCOL)...............................................................................................................- 104 -
2. CLIENTS AND SERVERS..................................................................................................................................................- 104 -
3. ETHERNET.........................................................................................................................................................................- 105 -
4. FIRMWARE.........................................................................................................................................................................- 105 -
5. GATEWAY...........................................................................................................................................................................- 105 -
6. ICMP (INTERNET CONTROL MESSAGEPROTOCOL)...............................................................................................- 105 -
7. INTERNET...........................................................................................................................................................................- 105 -
8. IP (INTERNET PROTOCOL)ADDRESS..........................................................................................................................- 106-
9. MAC (MEDIA ACCESS CONTROL)ADDRESS............................................................................................................- 106 -
10. PACKET ........................................................................................................................................................................- 106 -
11. PING..............................................................................................................................................................................- 106 -
12. RARP (REVERSEADDRESS RESOLUTION PROTOCOL)....................................................................................- 106 -
13. SOCKET........................................................................................................................................................................- 107 -
14. SUBNET MASK............................................................................................................................................................- 107 -
15. TCP (TRANSMISSION CONTROL PROTOCOL)......................................................................................................- 107 -
16. TCP/IP.........................................................................................................................................................................- 107 -
17. UDP (USER DATAGRAM PROTOCOL)....................................................................................................................- 107 -
APPENDIX C: ACTUAL BAUD RATE MEASUREMENT........................................................................................................- 108 -
APPENDIX D: REVISION HISTORY..........................................................................................................................................- 109 -

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Packing List
The tGW-700 shipping package includes the following items:
tGW-700 Series
Quick Start
CA-002 Cable
The tGW-700-T shipping package includes the following items:
tGW-700-T Series
Quick Start
The GW-2200 shipping package includes the following items:
GW-2200 Series
Quick Start
Note
If any of these items are missing or damaged, please contact the local distributor for more information.
Save the shipping materials and cartons in case you need to ship the module in the future.

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More Information
Documentation
tGW-700 Series / tGW-700-T Series
https://www.icpdas.com/en/download/index.php?nation=US&kind1=&model=&kw=tGW-700
GW-2200 Series
http://www.icpdas.com/en/download/index.php?nation=US&kind1=&model=&kw=GW-2200
Firmware
tGW-700 Series / tGW-700-T Series
https://www.icpdas.com/en/download/show.php?num=2417&nation=US&kind1=&model=&kw=tG
W-700
GW-2200 Series
http://www.icpdas.com/en/download/show.php?num=2750&nation=US&kind1=&model=&kw=GW
-2200
Software
eSearch Utility
http://www.icpdas.com/en/product/guide+Software+Utility_Driver+eSearch__Utility

Tiny Modbus/TCP to RTU/ASCII Gateway
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1. Introduction
Modbus has become the de facto standard protocol for industrial communication, and is now the
most commonly available means of connecting industrial electronic devices. Modbus allows for
communication between many devices connected to the same RS-485 network, for example, a
system that measures temperature and humidity and communicates the results to a computer.
Modbus is often used to connect a supervisory computer with a remote terminal unit (RTU) in
supervisory control and data acquisition (SCADA) systems.
The tGW-700/GW-2200 module is a Modbus TCP/UDP to RTU/ASCII gateway that enables a Modbus
TCP/UDP host to communicate with serial Modbus RTU/ASCII devices through an Ethernet network,
and eliminates the inherent cable length limitations of legacy serial communication devices. The
module can be used to create
pair-connection applications (as well as
serial-bridge or serial-tunnel applications),
and can then route data over a TCP/IP
connection between two serial Modbus
RTU/ASCII devices, which is useful when
connecting mainframe computers, servers
or other serial devices that use Modbus
RTU/ASCII protocols and do not themselves
have Ethernet capability. And the
tGW-700/GW-2200 adopts the dual-stack
technology to support the IPv4 and IPv6
simultaneously (version 2.2.0 or later).

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In harsh industrial environments, the tGW-700/GW-2200 series (for i version) also adds 3000 VDC
and +/- 4 kV ESD protection component that diverts the potentially damaging charge away from
sensitive circuit to protects the module and equipment from the sudden and momentary electric
current.
The tGW-700/GW-2200 module features a powerful 32-bit MCU that enables efficient handling of
network traffic, and also has a built-in web server that provides an intuitive web management
interface that allows users to modify the configuration of the module, including the DHCP/Static IP,
the gateway/mask settings and the serial port settings.
The tGW-700/GW-2200 module offers true IEEE 802.3af-compliant
(classification, Class 1) Power over Ethernet (PoE) functionality using a
standard Category 5 Ethernet cable to receive power from a PoE switch, such
as the NS-205PSE. If there is no PoE switch on site, the module will also accept
power input from a DC adapter. The tGW-700/GW-2200 module is designed
for ultra-low power consumption, reducing the hidden costs resulting from increasing fuel and
electricity prices, especially when a large number of modules are installed. Reducing the amount of
electricity consumed by choosing energy-efficient equipment can also have a positive impact on
maintaining a green environment.
ComparisonofDeviceServers:
Series
Features
PPDS-700
PDS-700
DS-700
tDS-700
DS-2200
tGW-700
GW-2200
tGW-700-T
Virtual COM




-
-
Programmable


-
-
-
-
PoE

-
-


-
Modbus
Gateway

-
-
-


Multi-client
About 20 Sockets
1 Sockets/Port
tGW-700 RevB/GW-2200:
32 Sockets/port
tGW-700 Non-RevB:
10 Sockets/port
32 Sockets/port
Remarks
Professional
Powerful
Isolation for
DS-715
Cost-effective,
Entry-level
Cost-effective,
Entry-level
Cost-effective,
Entry-level

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1.1 Features
Supports Modbus TCP/UDP master and slave
Supports Modbus RTU/ASCII master and slave
Max. connections (masters) per serial port:
32 for tGW-700 RevB version, tGW-700-T Series, GW-2200 Series
32 (tGW-71x), 16 (tGW-72x) or 10 (tGW-73x) for tGW-700 Non-RevB version
Read-cache ensures faster Modbus TCP/UDP response
Supports UDP responder for device discovery (UDP Search)
Static IP or DHCP network configuration for IPv4
Link-local Address and SLAAC(Stateless address auto-configuration) for IPv6
Supports IPv4 and IPv6 simultaneously with dual-stack
Easy firmware update via the Ethernet (BOOTP, TFTP)
Tiny Web server for configuration (HTTP)
Contains a 32-bit MCU that efficiently handles network traffic
10/100 Base-TX Ethernet, RJ-45 x1 (Auto-negotiating, auto MDI/MDIX, LED Indicators)
Supports 2-port Ethernet Switch (LAN Bypass), Daisy-Chain wire (Only GW-2200 Series)
Includes redundant power inputs: PoE (IEEE 802.3af, Class 1) and DC jack
Note: tGW-700-T series don’t support PoE.
Allows automatic RS-485 direction control
Power or Signal isolation for i versions
+/- 4 kV ESD protection
Male DB-9 or terminal block connector for easy wiring
Tiny form-factor and low power consumption
RoHS compliant with no Halogen
Cost-effective Modbus Gateway
1.2 Applications
Factory Automation
Building Automation
Home Automation
Remote Diagnosis and Management

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1.3 Ethernet Solutions
Nowadays, the Ethernet protocol has become the foremost standard for local area networks.
Connectivity via the Internet snow common in many of the latest applications from home
appliances, to vending machines, to testing equipment, to UPS, etc. An Ethernet network can link
office automation and industrial control networks, access remote systems and share data and
information between machines from multiple vendors, and also provides a cost-effective solution
for industrial control networks.

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1.4 Web Server Technology
Web server technology enables the tGW-700/GW-2200 to be configured via a standard web
browser interface, e.g., Google Chrome, Internet Explorer, or Firefox, etc. This means that it is easy
to check the configuration of the tGW-700/GW-2200 via an Ethernet network without needing to
install any other software tools, thereby reducing the learning curve required for maintaining the
device.

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2. Hardware Information
This chapter provides a detailed description of the front panel, the hardware specifications, the pin
assignments, the wiring notes and the dimensions for the tGW-700/GW-2200 series modules.
2.1 Specifications
Model
tGW series
tGW-712
tGW-712i
tGW-722
tGW-722i
tGW-732
tGW-732i
tGW-715
tGW-715i
tGW-715-T
tGW-715i-T
tGW-725
tGW-725i
tGW-735
tGW-735i
tGW-718
tGW-718i
tGW-718i-D
tGW-718-T
tGW-718i-T
tGW-724
tGW-724i
tGW-734
tGW-734i
GW series
GW-2212i
GW-2222i
GW-2232i
GW-2215i
GW-2225i
GW-2235i
System
CPU
32-bit ARM
Communication Interface
Ethernet
700 (-T) Series
10/100 Base-TX, 8-pin RJ-45 x 1, (Auto-negotiating, Auto-MDI/MDIX, LED indicator)
2200 Series
2-Port 10/100 Base-TX Ethernet Switch with LAN Bypass, RJ-45 x 2 (Auto-negotiating, Auto-MDI/MDIX, LED indicator)
PoE
700 Series
IEEE 802.3af, Class 1
2200 Series
700-T Series
-
COM Port
700 (-T)Series
1 x RS-232
2 x RS-232
3 x RS-232
1 x
RS-422/
RS-485
2 x
RS-485
3 x
RS-485
1 x
RS-232 or
RS-422/485
1 x RS-485
1 x RS-232
1 x RS-485
2 x RS-232
2200 Series
2 x
RS-422/
RS-485
3 x
RS-422/
RS-485
Self-Tuner
-
Yes, automatic RS-485 direction control
RS-485
Bias Resistor
-
Yes, 1 KΩ
Node
-
254 (max.)
UART
16c550 or compatible
Power Isolation
1000 VDC for tGW-722i/ 732i/ 718i-D , GW-2212i / 2222i / 2232i
Signal Isolation
3000 VDC for tGW-712i/ 715i/ 725i/ 735i/ 718i/ 724i/ 734i/715i-T/718i-T , GW-2215i / 2225i / 2235i
ESD Protection
+/-4 kV
COM Port Format
Baud Rate
115200 bps Max.
Data Bit
5, 6, 7, 8
Parity
None, Odd, Even, Mark, Space
Stop Bit
1, 2
Power
Power Input
PoE: IEEE 802.3af, Class 1 (except tGW-700-T Series ), DC jack: +12 ~ 48 VDC
Power Consumption
0.07 A @ 24 VDC
Mechanism
Connector
700 (-T) Series
Male DB-9 x 1 for tGW-712(i)/718i-D
10-Pin Removable Terminal Block x 1 for tGW-722(i)/732(i)/715(i)/725(i)/735(i)/718(i)/724(i)/734(i)/715(i)-T/718(i)-T
2200 Series
5-pin Removable Terminal Block x 1 for 2212i/2215i; x 2 for 2222i/2225i; x 3 for 2232i/2235i
Mounting
DIN-Rail
Flammability
Fire Retardant Materials (UL94-V0 Level)
Environment
Operating Temperature
-25 ~ +75 °C
Storage Temperature
-30 ~ +80 °C
Humidity
10 ~ 90% RH, non-condensing
Note: COM1/COM2/COM3 = TCP Port 502/503/504

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2.2 Appearance
tGW-700 Series
tGW-700-T Series
5. SerialCOM Ports
4. LED indicator
3. Operating Mode
Switch
2. +12 to +48 VDC Jack
1. PoE and Ethernet
RJ-45 Jack
6. DIN-Rail Mounting
5. SerialCOM Ports
4. LED indicator
3. Operating Mode
Switch
2. +12 to +48 VDC Jack
1. Ethernet RJ-45 Jack
6. DIN-Rail Mounting

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GW-2200 Series
PoE and Ethernet RJ-45 Jack
The tGW-700 module is equipped with an RJ-45 jack that is used as the 10/100 Base-TX Ethernet
port and features networking capabilities, supports PoE power supply (except tGW-700-T Series).
The GW-2200 series module is equipped with two RJ-45 jacks that are used as the 10/100 Base-TX
Ethernet port and features networking capabilities, only ETH1 supports PoE power supply. When an
Ethernet link is detected and an Ethernet packet is received, the Link/Act LED (Orange) indicator
will be illuminated. When power is supplied via PoE (Power-over-Ethernet), the PoE LED (Green)
indicator will be illuminated.
+12 to +48 VDC Jack
The tGW-700 is equipped with a +12VDC to +48 VDC jack that can be used to connect a power supply.
The tGW-700-T series and the GW-2200 series is equipped with a +12VDC to +48 VDC terminal that
can be used to connect a power supply. If no PoE switch is available on site, a DC adapter can be
used to power the tGW-700/GW-2200 module.
E TH1 supports PoE, Ethernet
E TH2 supports Ethernet o nl y
5. SerialCOM Ports
4. LED indicator
2. +12 to +48 VDC terminal
3. OperatingMode Switch
1. PoE and Ethernet
RJ-45 Jack
6. DIN-Rail Mounting

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Operating Mode Switch
Run Mode:Firmware operation Init Mode: Configuration mode
For tGW-700/GW-2200 series modules, the operating mode switch is set to the Run position by
default. In order to update the firmware for the tGW-700/GW-2200 series module, the switch must
be moved from the Run position to the Init position. The switch must be returned to the Run
position after the update is complete.
LED Indicator
Once power is supplied to the tGW-700/GW-2200 series module, the systemLED indicator will
illuminate. An overview of the system LED functions is given below:
Function
Color
S1 LED Behavior
Running Firmware
Red
Steady ON
NetworkReady
Slow flashing –Once every3 seconds
Serial Port Busy
Rapid flashing –Once every 0.2 seconds
The following serial port LED indicators are tGW-718i-D only. You can change the serial interface via
web server. An overview of the serial Port LED functions is givenbelow:
Function
RS-232
RS-485
RS-422
LED Behavior

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Serial COM Ports
The number of serial COM Ports available depends on the type of tGW-700/GW-2200 module. For
more detailed information regarding the pin assignments forthe Serial COM ports, refer to Section
2.4 Pin Assignments .
DIN-Rail Mounting
The tGW-700/GW-2200 series modules include simple rail
clips on the bottom of the chassis that allow them to be
reliably mounted on a DIN-Rail or a wall. For more detailed
information regarding DIN-Rail Mounting, refer to the illustration
in figure below.
Mounting on a DIN-Rail
Dismounting form a DIN-Rail







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2.3 Dimensions
The following diagrams provide the dimensions of the tGW-700/GW-2200 series module and
CA-002 cable that can be used as a reference when defining the specifications and the DC power
supply plug for any custom enclosures. All dimensions are in millimeters.
tGW-700 Series Module (Unit: mm)
tGW-712:
tGW-712i/718i-D:

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tGW-722(i)/732(i)/715(i)/725(i)/735(i)/718(i)/724(i)/734(i):
CA-002 Cable (Unit: mm)
Note: Cable color: BLACK
NO
DESCRIPTION
QTY
UNIT
1
UL2464 18AWG 2C(RED/BLACK)
0D5.0 COLOR BLACK
1
PCS
2
DC PLUG 5.5*2.1
1
PCS
3
PVC:45/P BLACK
G
Pin Assignment
P1
P2
1 RED OPEN
2 BLACK OPEN

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tGW-700-T Series Module (Unit: mm)
tGW-715(i)-T/718(i)-T:

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GW-2200 Series Module (Unit: mm)
GW-2212i/2222i/2232i/2215i/2225i/2235i
GW-2212i/2215i 1 port
GW-2222i/2225i 2 ports
GW-2232i/2235i 3 ports
GW-2232i/2235i 3 埠